Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing our new design; and,

FIG. 2 is another front view thereof.

The dot dash lines represent an unclaimed boundary line and form no part of the claimed design. In FIG. 2, the outermost broken line showing a device illustrates environment, whereas the inner broken line showing a display screen illustrates portions of the article. None of the broken lines form part of the claimed design. 

CLAIM We claim the ornamental design for a display screen or portion thereof with icon, as shown and described. 